Self-threading loom-shuttle.



No. 780,280Q IATENTED JAN. 12 1905. U, E? $AUKETT.

SELF THRBADING LOQM SHU FLE.

APPLICATION FILED DECBO, 1.903.

INVENTOI? PATENTED JAN. 1'7, 1905.

C. E. SAC KETT.

SELF THREADING LUOMSHUTTLB.

2 SHBETS SEBET 2,

APPLICATION FILED B13030. 1.903.

INVENTOI? No. 780,230. Patented January 1'7, 1905.

Sra rns ATENT FFICE.

CHARLES E. SAOKETT, OF FALL RIVER. MASSACHUSETTS, ASSIGNOR TO SAOKETT-MARSHALL SHUTTLE OOb IPANY. OF FALL RIVER, MASSA- CHUSETTS, A CORPORATION OF RHODE ISLAND.

SELF -THREADINGE LOOlVl-SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 780,230, dated January 17, 1905.

Application filed December 30,1903- $erial N0. 187,1 '75.

T (117/ who? i/ OOH/607%! tion of the same figures on line O through the Be it known that I, OHAnLns E. SAGKETT, tension mechanism. Fig. is a front eleva- 5 a citizen of the United States, residing at tion of the tension device removed from the Fall River, in the county of Bristol and State shuttle-body. Fig. 11 is a plan view of the 5 of lvlassachusetts. have invented a new and same. Fig. 152 is a plan View 01. the thread useful Improvement in Self-'lhreading Looming-post removed from the shuttle-body. Fig. Shuttles, of which the following description, 13 is a vertical side elevation of the same on 55 in'connection with the accompanying drawaxial line A. Fig. 14 is a reverse side elevaings, is a specification. tion of Fig. 13. Fig. 15 is a horizontal cross- 10 My invention is designed to do away with section of the same on axial line A.

the unclean and unhealthy process of sucking in all the figures like characters relate to the thread from the central eye of the shuttle like parts. 60

where it is placed by the linger, through the Figs. 1 to 4 illustrate the construction of side eye-outlet, a process which is almost unithe wood shuttle-body only and will be first de- I 5 versal, notwithstanding the issue of many patscribed. These figures, as shown,are intended cuts to eradicate it. The failure to generally to be'used withoutthe tension deviceillustrated adopt these inventions is due to the fact that in the remaining figures. 1 is an ordinary hard- 5 they either make the threading more difficult, wood shuttle-body substantially of the shape complicate the free run of the thread, or do in general use in cotton-mills, which consists not hold it in position after threading as seof a bobbin or cop chamber 2, a thread-well 3,

curely as the present obnoxious system. a solid barricade 4: between them, which is bi- It is the object of this invention to oversected by the thread-slot 5. It is usual for the 70 come these objections by a novel arrangement thread to be drawn through this slot, inserted of thread-outlet, which does away with all in an eyehole in the bottom of the thread-well,

shuttle-eyes and thread-tubes now generally and then sucked through a tube leading to the used in combination with other improvements outlet-eye in the shuttle side, making a tor- Which are illustrated in the accompanying tuous passage with many bends, in which the 75 drawings. in whicl1-- thread must remain to run at high speed and A is'thelongitudinal axial center line of the requiring the obnoxious feature of suction. o shuttle-body both horizontally and vertically. The aim of this invention is to release thethread Bis asectional cross-line through the threadfrom its tortuous entrance-passage and to give ing mechanism; O,asimilar cross-line through it but one working bend at the center of the 80 the tension mechanism. thread-well around an apex-point, from which Figure 1 is a plan view of the threading end it radiates through the shuttle side with a long o'fa loom-shuttle wood body or case withoutits free sweep in all need'i'ul directions. This is interior mechanism. Fig. 2 is a side view of accomplished by perforating the shuttle side the same on the thread-outlet side. Fig. 3 is (seeFigzQ) in the center of the ordinary thread- 8 5 a vertical longitudinal section through the groove 6 with a long thin lateral and longisame on the axial line A. Fig. 4L is a cross tudinal slot 7, which narrows as it penetrates 40 section through the center of the thread-well the shuttle side on the dotted lines 7' 7 of Fig. on line B. Fig. 5 is a plan View of the same 1 and terminates within the shuttle-body at shuttle-body with the interior mechanism in the side of the thread-well in the narrower slot 9 position. Fig. 6 is a vertical longitudinal 7 as shown in Figs. 2 and 3. In order to get section of Fig. 5 on the axial line A. Fig. thethreadintothislateralslot,theshuttle-body 7 is a horizontal longitudinal section of Fig. is slotted perpendicularly to the surface of the 5 on the axial line A. Fig. 8 is a cross-secshuttle (in inverted-T formlat any convention of Figs. 5 to 7 on line B through the ient point that will make a connection between threading mechanism. Fig. 9 is a cross-secit and the thread-well, admitting of easy and permanent threading. In Figs. 1 and 2 is shown such a vertical slot 8, bisecting the lateral slot 7 about at its center (though that is immaterial) and then ranging well forward of the thread-well, the object being to enter the thread at the surface of the shuttle well forward of the limits of thread radiation in the slot 7, also that the entrance passage should be as nearly at right angles to the play of the thread in the slot 7 as possible and also well above its working level. The shuttle-body being thus constructed a threading-post 9 having a round base-plate 1O fitting the round bottom of the thread-well is inserted in it (see Figs. 5 to 8) and made fast by the screws 11. The post rises vertically from the base-plate and substantially divides the thread-well on the axial line A into two parts, the post occupying one side exposing'a plane vertical face on the axial line A, its reverse side neatly fitting and following the curve of the thread-well until it reaches the abutting line 12. Here the post is formed with a front projection 13, designed to carry the thread some distance forward of its lim its of radiation and to afford easy entrance of the thread into the vertical slot 8. To this end it is provided with a rounded lip 14 at its top inside surface, under which lip the thread is first led before being pulled around into the slot 8. This forward projection 13 is tapered downward on all sides, so that the thread easily slips down it. It is also stepped at 15 (see Fig. 6) as an extra precaution against the return of the thread. The shuttle-body is hollowed out at 16 (see Figs. 1, 3, and 4) to receive this projection to the post. It is also stepped at 17 to correspond with the step in the post, space being left at all points between the wood and the post for a free passage downward of the thread into the lateral slot. (See Fig. 6.) At the level of the lateral slotin the wood body of the shuttle the threading-post is provided with a similar lateral and longitudinal slot 18 from its front face to about its center on its axial side and to register with the slot in the side of the wood shuttle-body on its reverse side, (see Figs. 13 and 14,) thus providing a central apex-point 19, smoothly rounded, about which the thread 20 makes its turn and then has a free radial sweep in all directions on a large wearing floor or surface, as clearly shown in Fig. 7 by the radial dottedlines 21. The wood body of the shuttle is slightly cored down at 22 about the forward end of the threadingpost to cause the thread to draw quickly under the lip 11, and its edge is rounded to sweep the thread downward by simply pulling it around into the vertical threading-slot 8. The section of the thread-well opposite the threading-post is occupied by a movable jaw 23, which is pivoted to the base-plate and is operated by the wire 2 1(see Fig. 5) to impinge against the plane face of the threadingpost, thereby breaking the thread and stopping the loom whenever the warp-shed is disarranged. This weft-parting device forms the subject of serial application No. 151,223, filed April 6, 1903, is fully claimed there and not claimed here, and is only shown to account for the special construction of a vertical face to the threading-post, which is essential to it.

It will be observed that in this invention the thread has so free a run from the bobbin that it is desirable to have some method of putting a drag or tension upon it. To meet this want, I insert under the ordinary wood barricade 4:, between the bobbin-chamber and the thread-well, an adjustable tension device. It consists (see Figs. 5 to 11) of a base-plate 25, having one upright fixed vise-jaw 26, preferably made as part of the base-plate. A similar movable jaw 27 faces it, and the two are connected by a stiff expansion U-spring 28, made fast in the fixed jaw and sliding neatly in the movable jaw. To preserve the parallelism of thejaws, a pivot 29 is made fast in the face of the fixed jaw and slides neatly in the face of the movable jaw. The cross relation of the two sliding arms guides the movable jaw squarely in its movement. The outer face 30 of the movable jaw is sloped, and an adjusting-screw 31 is inserted in the body of the shuttle, having a bearing-point against the back of the movable jaw. It is evident a downward movement of the screw will gradually close the jaws against the resistance of the spring and that they will react as it is released. Thus a very delicate pressure can be put upon the running weft-thread. This tension device is inserted beneath the surface of the usual wood barricade between the bobbinchamber and the thread-well in order that the thread-passage 5 may shed the thread down between the tension-jaws in the usual manner, the passage in each registering with the other. By adopting this construction I avoid any superficial crack between the top of the jaws and the wood body of the shuttle in which the thread would inevitably catch if the jaws were brought to the surface. The tension device is secured to the floor of the shuttle-body by the screw 32.

This form of thread-outlet and tension device is believed to be applicable to all shuttles in use in cotton, silk, wool, or carpet looms.

So far as I am aware it is broadly new to construct a shuttle-outlet permit-ting the weftthread to radiate from a central point within the body of the shuttle, dispensing with shuttle-eyes, tubes, or confined working passages.

Various forms of threading-posts may be used in connection with this improvement, embodying the general principles herein described of a central post or point around which the weftthread is drawn sidewise through the shuttle side and which do not require a flat longitudinal interior surface, as shown, against which a cam may impinge,

IIO

veaaso such a surface not beinga requisite of this invention. Also the length of the outside longitudinal slot maybe varied more or less to put more or less drag or tension upon the weft'thread. Modifications in these respects are claimed to come within the scope of this invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a loom-shuttle,ashuttle-body provided with a bobbin-chamber, a thread-well and a communicating passage between them, and a narrow lateral and. longitudinal slot in the outlet side of the thread-well substantially at the axial center of the shuttle, said slot widening in open-fan shape as it approaches the shuttleperiphery, making at its side a long narrow slot terminating centrally in the outside thread-groove of the shuttle-body, substantially as described and shown.

2. In a loom-shuttle, the shuttle-body pro vided with a narrow longitudinal fan-like outlet-slot having ends terminating centrally in the outside thread-groove, and an intersecting vertical slot rising through the shuttle side to its surface substantially as described and shown.

3. In a loom-shuttle the shuttle-body provided with a narrow longitudinal outlet-slot at about the axial center of the shuttle, forming a thin lateral slot for thread radiation through it, and a vertical slot intersecting said outlet-slot and extending forward past the limit of thread radiation some distance into the body of the shuttle substantially as described and shown.

4. In a loom-shuttle, the shuttle-body provided with a thread-well and a longitudinal fan-like outlet-slot forming a thin lateral slot tapping the side of the thread-well at about its axial center, an intersecting vertical slot rising to the surface of the shuttle and extending forward of said slot into the body of the shuttle, and a vertical passage from the forward terminus of the vertical slot, to the front side of the thread-well, substantially as described and shown.

5. In a loom-shuttle, the shuttle-body provided with a thin longitudinal slot penetrating the side of the shuttle to the thread-well at about its axial center, the sides of said slot widening from the thread-well as they approach the periphery of the shuttle-body, and a vertical slot intersecting said longitudinal slot, and crossing its forward section substantially at right angles to the limit or path of thread radiation as described and shown.

6. In a loom-shuttle, the shuttle-body provided with a lateral and longitudinal slot widening from the side of the thread-well to the periphery of the shuttle, a thread-post maintained at about the axial center of the thread-well, from which a weft-thread may radiate through the lateral slot, substantially as described and shown.

7 In a loom-shuttle, the shuttle-body provided with a thin lateral and longitudinal lateral slot widening from the side of the threadwell to the periphery of the shuttle-body terminating in the outside threadgroove, an upright slot intersecting said lateral slot rising to the face of the shuttle, and forming a threadentranee to said lateral slot, a thread post maintained at about the axial center of the thread-well, from which a weft-thread may radiate through said lateral slot substantially as described and shown.

8. In a loom-shuttle. the shuttlebody provided with a self-threading device, consisting of a bobbin-chamber, a thread-well, a passage between them, a fan-like outlet-slot in the side of the shuttle-body communicating with the thread-well, a threading-post erected in the thread-well, a lateral slot penetrating said post on its forward side about at its axial center, said slot widening to the outside periphery of said threading-post, and registering with the lateral outlet-slot in the side of the shuttlebody, substantially as described and shown.

9. In a loom-shuttle, the shuttle-body pro 'vided with a thread-well enlarged at its side adjacent the end of the shuttle whereby a lodge is formed between the top and bottom of the thread-well, a thread-deli\-'ery slot extending through the side of the shuttle-body, and a slot leading thereto passing vertically through the side of the shuttle-body, in combination with a threadi ng-post seated in the thread-well and having an abutment overhanging said ledge, that part of the post above the abutment being rounded and tapered downwardly, and a slot in its forward side registering with the thread-delivery slot, the post being spaced a short distance from the shuttle-body at all points whereby a narrow thread-passage is left between said parts, substantially as described and shown.

10. In a loom-shuttle, the shuttle-body provided with a thread-well and a threading device arranged therein, consisting of a threading-post slotted laterally from its forward face toward its center at about the axial center of the shuttle-body, said lateral slot registering with a lateral and longitudinal outletslot extending from the threadwell through the side of the shuttle-body, said post having one exposed inner plane face on the central threading-line of the shuttle-body, its outer face being rounded to the shape of the threadwell, and abuttingclosely against the shuttlebody at rear and side of the thread-well until it meets a vertical slot passing through the side of the sh Little-body and providing a communication between the thread-well and the lateral longitudinal slot by means of a conmeeting-passage spaced between the threadingpost and the shuttle-body from its forward end to its junction with said vertical slot, thereby forming a continuous threading passage through which the thread may be led around the forward end of said post into the vertical slot and thence down to the lateral longitudinal outlet-slot in the shuttle-body and the connecting lateral slot in the threading-post to form a direct outlet from the center of the shuttle-body through its side substantially as described and shown.

11. In a loom-shuttle the shuttle-body provided with a thread-well, a lateral longitudinal outlet-slot extending from the thread-well through the side of the shuttle-body and a vertical threading-slot passing through the side of the shuttle-body and providing a communication between the thread-well and the lateral longitudinal slot, a threading-post erected in the thread-well and provided with a slot or notch registering with said lateral longitudinal slot and having a plane face on the central threading-line of the shuttle and a rounded outer side engaging the wall of the threadwell, said post being located in the rear of the vertical threading-slot and spaced from the front wall thereof whereby a passage is left through which the thread may be led around the forward end of said post into the vertical slot and thence down to the lateral longitu: dinal outlet-slot substantially as described and shown.

12. In a loom-shuttle the combination of a tension device consisting of a base-plate havlelism of said jaws, consisting of a pivot made fast in the fixed jaw, and sliding neatly in the movable jaw, an expansion-spring in U form connecting the sides of both jaws, one end made fast in the fixed jaw side, the other end sliding neatly through the movable jaw, in cross relation to the pivot aforesaid, substantially as described and shown.

14:. In a loom-shuttle the combination with the shuttle-body of a tension device comprising a fixed jaw and a movable jaw, the movable jaw having an outer inclined face, and a screw inserted in the shuttle-body having a point bearing against said inclined surface to operate said jaw, substantially as described and shown.

In testimony whereofIhave hereunto signed my name in the presence of two subscribing witnesses.

CHARLES E. SACKETT.

l/Vitnesses:

THos. D. FORNEY, BRONSON BURR. 

